Will we have to mess around with the mounting order so each game can work correctly (no missing animations, improper models, etc), or does this mean that my dream of a unified, non-stop HL2-EP1-EP2 campaign can be made a reality?

Original SMOD has many cool stuff expect ironsights, customs weapons and mappad, interesting your skills are enough to recreate all fancy weapons like strider cannon, flamethrower with it fire effects, that chain lighting attack from golden crowbar, proper gore with ragdolls gibs and ability to gib dead corpses too, not only alive NPCs, that Combine Ace with ability to jump around map, and remake these cool explosion and impact effects instead of these ugly ascetic effects from vanilla Half-Life 2?